:root {
    --bg-color: #f8f9fa;
    --text-color: #2c3e50;
    --accent: #3498db;
    --border: #e2e8f0;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
}
header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo { font-size: 1.5rem; font-weight: bold; letter-spacing: 1px; }
nav a { text-decoration: none; color: var(--text-color); margin-left: 1.5rem; font-weight: 500; }
nav a.active, nav a:hover { color: var(--accent); }
main { max-width: 1000px; margin: 2rem auto; padding: 0 1rem; }
.hero { text-align: center; padding: 3rem 0; }
.hero h1 { font-size: 2.5rem; margin-bottom: 1rem; }
.hero-img { max-width: 100%; height: auto; margin-top: 2rem; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.card { background: #fff; padding: 1.5rem; border-radius: 8px; border: 1px solid var(--border); }
.post { background: #fff; padding: 2rem; border-radius: 8px; border: 1px solid var(--border); margin-bottom: 1.5rem; }
.date { color: #7f8c8d; font-size: 0.9rem; }
.device-table { width: 100%; border-collapse: collapse; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.device-table th, .device-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid var(--border); }
.device-table th { background-color: #f1f5f9; font-weight: 600; }
.status-up { color: #27ae60; font-weight: bold; }
.status-down { color: #e74c3c; font-weight: bold; }
.media-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.media-item { background: #fff; padding: 1.5rem; border-radius: 8px; border: 1px solid var(--border); }
.media-item img { width: 100%; height: auto; border: 1px solid var(--border); }
.video-placeholder { background: #000; color: #fff; padding: 4rem 2rem; text-align: center; border-radius: 4px; }
footer { text-align: center; padding: 3rem 0; color: #7f8c8d; font-size: 0.9rem; }
@media (max-width: 768px) { .media-grid { grid-template-columns: 1fr; } header { flex-direction: column; gap: 1rem; } }